Mutual capacitive touch substrate, mutual capacitive touch panel, and mutual capacitive touch apparatus

ABSTRACT

The present application discloses a mutual capacitive touch substrate comprising a matrix of a plurality of electrode units, adjacent electrode units complementarily matching each other. Each electrode unit comprises a first electrode having a first undulating boundary; a second electrode having a second undulating boundary; and a fill pattern between the first electrode and the second electrode, having an undulating boundary substantially complementary to corresponding portions of the first undulating boundary and the second undulating boundary. The first electrode, the second electrode, and the fill pattern in a same electrode unit are electrically isolated from each other.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. application Ser. No.15/501,852, filed May 20, 2016, which is a national stage applicationunder 35 U.S.C. § 371 of International Application No.PCT/CN2016/082862, filed May 20, 2016, which claims priority to ChinesePatent Application No. 201510524282.X, filed Aug. 24, 2015. Each of theforgoing applications is herein incorporated by reference in itsentirety for all purposes

TECHNICAL FIELD

The present invention relates to display technology, more particularly,to a mutual capacitive touch substrate, a mutual capacitive touch panel,and a mutual capacitive touch display apparatus.

BACKGROUND

Touch control display panels have found a wide range of applications indisplay field. A conventional touch control display panel includes aplurality of first touch electrodes arranged in columns forming aplurality of first conductive channels, and a plurality of second touchelectrode in rows forming a plurality of second conductive channels. Twoadjacent first touch electrodes along a column are connected through afirst bridge. Two adjacent second touch electrodes along a row areconnected through a second bridge. When a finger touches a point on thetouch control display panel, the capacitor of the finger superimposes onthe touch panel capacitor, resulting in a change in the capacitance ofthe touch panel capacitor. In a mutual capacitive touch display panel,the first electrode may be a sensing electrode and the second electrodemay be a driving electrode. In detecting touch events, the mutualcapacitive touch display panel examines the first electrode array andthe second electrode array sequentially. Based on the capacitance changeupon a touch event, the coordinates of the first electrode and thesecond electrode being touched may be determined. Touch resolutioncorrelates with the distance between adjacent conductive channels. Asmaller distance between adjacent conductive channels results in ahigher touch resolution.

SUMMARY

In one aspect, the present invention provides a mutual capacitive touchsubstrate comprising a matrix of a plurality of electrode units,adjacent electrode units complementarily matching each other, eachelectrode unit comprising a first electrode having a first undulatingboundary; a second electrode having a second undulating boundary; and afill pattern between the first electrode and the second electrode,having an undulating boundary substantially complementary tocorresponding portions of the first undulating boundary and the secondundulating boundary; the first electrode, the second electrode, and thefill pattern in a same electrode unit are electrically isolated fromeach other.

Optionally, the fill pattern is a mosaic pattern comprising at least twoadjacent sub-patterns.

Optionally, the first electrode comprises a first part, a second part,and a first bridge electrically connecting the first part and the secondpart; the first part, the second part, and the first bridge arrangedsubstantially along a first direction; the second electrode comprises athird part, a fourth part, and a second bridge electrically connectingthe third part and the fourth part and dividing the first electrode intothe first part and the second part; the third part, the fourth part, andthe second bridge arranged substantially along a second direction, thesecond direction intersecting the first direction; and the first part,the second part, the third part, the fourth part, and the second bridgeare in a first layer, the first bridge is in a second layer differentfrom the first layer.

Optionally, the first electrode comprises at least one protrusionextending substantially along the second direction.

Optionally, the at least one protrusion has an undulating boundary thatis a part of the first undulating boundary, a portion of the secondelectrode proximal to the at least one protrusion has an undulatingboundary that is a part of the second undulating boundary, a portion ofthe fill pattern is between the at least one protrusion and the portionof the second electrode proximal to the at least one protrusion, theportion of the fill pattern has an undulating boundary substantiallycomplementary to the at least one protrusion and the portion of thesecond electrode proximal to the at least one protrusion.

Optionally, the at least one protrusion comprises a plurality ofprotrusions that are symmetrical relative to an axis of the firstelectrode along the first direction.

Optionally, the fill pattern comprises at least two adjacentsub-patterns between the second electrode and the first part of thefirst electrode, and at least two adjacent sub-patterns between thesecond electrode and the second part of the first electrode.

Optionally, the undulating boundary of the fill pattern is a smoothlycurved boundary.

Optionally, the undulating boundary of the fill pattern is a polygonalcurve.

Optionally, the first electrode, the second electrode, and the fillpattern are electrically isolated from each other.

Optionally, the matrix of electrode units comprises a plurality of rowsof electrode units along the first direction and a plurality of columnsof electrode units along the second direction; a plurality of secondelectrodes in each row of electrode units are electrically isolated fromeach other, a plurality of first electrodes in each column of electrodeunits are electrically isolated from each other; the plurality of firstelectrodes in each row of electrode units form a first conductionchannel along the first direction comprising a plurality of firstintegral electrode blocks connected by a plurality of first bridges; thefirst part and the second part from two adjacent electrode unitsrespectively constitute each first integral electrode block; and theplurality of second electrodes in each column of electrode units form asecond conduction channel along the second direction comprising aplurality of second integral electrode blocks connected by a pluralityof second bridges; the third part and the fourth part from two adjacentelectrode units respectively constitute each second integral electrodeblock.

Optionally, midlines of first conduction channels are spaced apart by adistance in the range of about 3 mm to about 6 mm, and midlines ofsecond conduction channels are spaced apart by a distance in the rangeof about 3 mm to about 6 mm.

Optionally, the first electrode comprises a plurality of protrusionsextending substantially along the second direction, the plurality ofprotrusions are symmetrical relative to an axis of the first electrodealong the first direction; and midlines of first conduction channels arespaced apart by a distance in the range of about 6 mm to about 10 mm,and midlines of second conduction channels are spaced apart by adistance in the range of about 6 mm to about 10 mm.

Optionally, the mutual capacitive touch substrate comprises a pluralityof first conduction channel groups and a plurality of second conductionchannel groups; each first conduction channel group comprises twoadjacent first conduction channels electrically connected in parallel,each second conduction channel group comprises two adjacent secondconduction channels electrically connected in parallel; midlines offirst conduction channel groups are spaced apart by a distance in therange of about 10 mm to about 15 mm, and midlines of second conductionchannel groups are spaced apart by a distance in the range of about 10mm to about 15 mm.

In another aspect, the present invention provides a mutual capacitivetouch panel comprising a mutual capacitive touch substrate describedherein.

In another aspect, the present invention provides a mutual capacitivetouch display apparatus comprising the mutual capacitive touch paneldescribed herein, an array substrate, and a package substrate.

Optionally, the mutual capacitive touch panel is an in-cell touch panel.

Optionally, the mutual capacitive touch panel is an on-cell touch panel.

Optionally, the mutual capacitive touch panel is an add-on type touchpanel.

Optionally, the mutual capacitive touch panel is a one-glass-solutiontype touch panel.

Optionally, the mutual capacitive touch panel is a glass-film-film typetouch panel.

BRIEF DESCRIPTION OF THE FIGURES

The following drawings are merely examples for illustrative purposesaccording to various disclosed embodiments and are not intended to limitthe scope of the present invention.

FIG. 1 is a diagram illustrating the structure of an electrode unit of amutual capacitive touch substrate in some embodiments.

FIG. 2 is a diagram illustrating the structure of an electrode unit of amutual capacitive touch substrate in some embodiments.

FIG. 3 illustrated the structure a mutual capacitive touch substrate insome embodiments.

FIG. 4 illustrated the structure a mutual capacitive touch substrate insome embodiments.

DETAILED DESCRIPTION

The disclosure will now describe more specifically with reference to thefollowing embodiments. It is to be noted that the following descriptionsof some embodiments are presented herein for purpose of illustration anddescription only. It is not intended to be exhaustive or to be limitedto the precise form disclosed.

In conventional mutual capacitive touch substrates, the first touchelectrode and the second touch electrode are of regular shapes. Duringimage display, touch electrodes having regular shapes cause opticalinterference of light, resulting in a lower contrast level in imagedisplay. The present disclosure provides a superior mutual capacitivetouch substrate that has an excellent blanking effect, a higher touchresolution, and is compatible with multiple types of touch controlchips.

In some embodiments, the mutual capacitive touch substrate includes amatrix of a plurality of electrode units, adjacent electrode unitscomplementarily matching each other. For example, the matrix may includea plurality of rows along the first direction and a plurality of columnsof electrode units along the second direction. Each electrode unitincludes a first electrode having a first undulating boundary, a secondelectrode having a second undulating boundary; and a fill patternbetween the first electrode and the second electrode, having anundulating boundary substantially complementary to correspondingportions of the first undulating boundary and the second undulatingboundary. The first electrode, the second electrode, and the fillpattern in a same electrode unit are electrically isolated from eachother. Optionally, the fill pattern is a mosaic pattern comprising atleast two adjacent sub-patterns (e.g., 3, 4, 5, 6 or more).

FIG. 1 is a diagram illustrating the structure of an electrode unit of amutual capacitive touch substrate in some embodiments. Referring to FIG.1, the electrode unit in the embodiment includes a first electrode 1 anda second electrode 2. The first electrode 1 includes a first part, asecond part, and a first bridge b1 electrically connecting the firstpart and the second part. The first part, the second part, and the firstbridge b1 are arranged substantially along a first direction (e.g., therow direction). The second electrode 2 includes a third part, a fourthpart, and a second bridge b2 electrically connecting the third part andthe fourth part and dividing the first electrode 1 into the first partand the second part. The third part, the fourth part, and the secondbridge b2 arranged substantially along a second direction (e.g., thecolumn direction), the second direction intersecting the firstdirection. Optionally, the first part, the second part, the third part,the fourth part, and the second bridge b2 are in a first layer, and thefirst bridge b1 is in a second layer different from the first layer. Thefirst part and the second part of the first electrode 1 are separatedfrom each other by the second bridge b2. The first part and the secondpart are electrically isolated from the second bridge b2. The first partand the second part are electrically connected together through thefirst bridge b1.

Referring to FIG. 1, the electrode unit further includes a fill pattern3 between the first electrode 1 and the second electrode 2, having anundulating boundary substantially complementary to correspondingportions of the first undulating boundary of the first electrode 1 andthe second undulating boundary of the second electrode 2. As shown inFIG. 1, the fill pattern 3 are electrically isolated from the firstelectrode 1 and the second electrode 2. The fill pattern 3 in FIG. 1 isa mosaic pattern having at least two adjacent sub-patterns 4.Optionally, the fill pattern 3 or any sub-pattern 4 thereof may have anirregular shape. Optionally, the fill pattern 3 is a mosaic patternhaving at least two adjacent sub-patterns 4 having irregular shapessubstantially complementary to each other and substantiallycomplementary to corresponding portions of the first electrode 1 and thesecond electrode 2.

The present mutual capacitive touch substrate includes a fill patternbetween the first electrode and the second electrode. By having a firstelectrode and a second electrode with undulating boundaries, and a fillpattern with a complementary undulating boundary in the mutualcapacitive touch substrate, optical interference between boundaries ofthe electrodes are significantly suppressed, achieving an excellentblanking effect.

FIG. 3 illustrated the structure a mutual capacitive touch substrate insome embodiments. The mutual capacitive touch substrate in theembodiment is a matrix of a plurality of electrode units (e.g., theelectrode unit as shown in FIG. 1), adjacent electrode unitscomplementarily matching each other. Referring to FIG. 3, the matrix ofelectrode units includes a plurality of rows along the first directionand a plurality of columns of electrode units along the seconddirection, the first direction intersecting the second direction. Asshown in FIG. 3, the plurality of second electrodes in each row ofelectrode units are electrically isolated from each other, the pluralityof first electrodes in each column of electrode units are electricallyisolated from each other. The plurality of first electrodes in each rowof electrode units form a first conduction channel 7 along the firstdirection including a plurality of first integral electrode blocksconnected in series by a plurality of first bridges. The first part andthe second part from two adjacent electrode units respectivelyconstitute each first integral electrode block. The plurality of secondelectrodes in each column of electrode units form a second conductionchannel 6 along the second direction including a plurality of secondintegral electrode blocks connected in series by a plurality of secondbridges. The third part and the fourth part from two adjacent electrodeunits respectively constitute each second integral electrode block. Asshown in FIG. 3, each first integral electrode block is substantiallysurrounded by a fill pattern having an undulating boundary and a mosaicpattern constituted by a plurality of irregularly shaped sub-patterns.

In some embodiments, the mutual capacitive touch substrate includes amatrix of a plurality of units, adjacent units complementarily matchingeach other. Optionally, each unit includes a first integral electrodeblock having a first undulating boundary, a second integral electrodeblock having a second undulating boundary, and a fill pattern betweenthe first integral electrode block and the second integral electrodeblock. The fill pattern has an undulating boundary substantiallycomplementary to corresponding portions of the first undulating boundaryand the second undulating boundary. The first integral electrode block,the second integral electrode block, and the fill pattern areelectrically isolated from each other in a same unit. Optionally, thefill pattern is a mosaic pattern constituted by at least two adjacentsub-patterns.

In some embodiments, the mutual capacitive touch substrate includes aplurality of rows of first integral electrode blocks connected in seriesby a plurality of first bridges along the first direction therebyforming a first conductive channel; and a plurality of columns of secondintegral electrode blocks connected in series by a plurality of secondbridges along the second direction thereby forming a second conductivechannel. The mutual capacitive touch substrate further includes a fillpattern layer on a same layer as the first integral electrode blocks andthe second integral electrode blocks. The fill pattern layer includes aplurality of fill patterns, which is a mosaic pattern having at leasttwo adjacent sub-patterns. Each first integral electrode block issubstantially surrounded by a fill pattern having an undulating boundaryand a mosaic pattern constituted by a plurality of irregularly shapedsub-patterns. A plurality of second integral electrode blocks areelectrically isolated from each other along the first direction, aplurality of first integral electrode blocks are electrically isolatedfrom each other along second direction. Optionally, the first integralelectrode block, the second integral electrode block, and the secondbridge are in a first layer, the first bridge is in a second layerdifferent from the first layer.

Optionally, the first direction is a horizontal direction and the seconddirection is a longitudinal direction. Optionally, the first directionis a longitudinal direction and the second direction is a horizontaldirection. Optionally, the first direction and the second direction aresubstantially orthogonal to each other. Depending on specific electrodepattern design, the first direction and the second direction mayintersect each other at an angle other than a right angle.

Optionally, a plurality of the second conductive channels areelectrically isolated from each other by an undulating pattern, e.g., apolygonal curve.

In some embodiments, the first electrode includes at least oneprotrusion extending substantially along the second direction.Optionally, the first part includes at least one protrusion extendingsubstantially along the second direction. Optionally, the second partincludes at least one protrusion extending substantially along thesecond direction. Optionally, the first part includes at least oneprotrusion extending substantially along the second direction, and thesecond part includes at least one protrusion extending substantiallyalong the second direction.

In some embodiments, the first electrode includes at least twoprotrusions on two opposite sides of the first electrode, each of whichextending substantially along the second direction. Optionally, thefirst part includes at least two protrusions on two opposite sides ofthe first part, each of which extending substantially along the seconddirection. Optionally, the second part includes at least two protrusionson two opposite sides of the second part, each of which extendingsubstantially along the second direction. Optionally, the first partincludes at least two protrusions on two opposite sides of the firstpart, each of which extending substantially along the second direction;and the second part includes at least two protrusions on two oppositesides of the second part, each of which extending substantially alongthe second direction.

In some embodiments, the first electrode includes at least twoprotrusions on a same side of the first electrode, each of whichextending substantially along the second direction. For example, thefirst part may include at least one protrusion and the second part mayinclude a protrusion, both protrusions on a same side of the firstelectrode and extending substantially along the second direction.

FIG. 2 is a diagram illustrating the structure of an electrode unit of amutual capacitive touch substrate in some embodiments. Referring to FIG.2, the first electrode 1 includes at least two protrusions 5 on a sameside of the first electrode 1, each of which extending substantiallyalong the second direction. As shown in FIG. 2, on a first side of thefirst electrode, the first part includes a protrusion 5 and the secondpart includes a protrusion 5, both protrusions extending substantiallyalong the second direction. On a second side of the first electrode, thefirst part also includes a protrusion 5 and the second part includes aprotrusion 5, both protrusions extending substantially along the seconddirection. As shown in FIG. 2, the first electrode 1 includes aplurality of end parts E. Each one of the plurality of end parts E ofthe first electrode 1 is divided from the second electrode 2 by one asingle etching line L. Optionally, as shown in FIG. 2, the singleetching line L has a shape of a wavy line. Optionally, each one of theplurality of end parts E is a farthest end from a geometry center of thefirst electrode 1 along a first direction or along a second direction,the second direction intersecting the first direction.

In some embodiments, a plurality of protrusions that are symmetricalrelative to an axis of the first electrode along the first direction.

Inclusion of at least one protrusion 5 in the first electrode 1increases effective touch-control areas and reduces sensing blind spotsin the mutual capacitive touch substrate. By having this design, thenumber of inductive positions in the substrate is increased, resultingin a higher touch resolution.

As the number of protrusions 5 increases, the number of etching lines onthe substrate also increases. Optionally, each first electrode 1 includefour protrusions, i.e., the first part includes two protrusions 5 on twoopposite sides of the first electrode 1, and the second part includestwo protrusions 5 on two opposite sides of the first electrode 1.Optionally, all protrusions 5 extend along the second direction.

In some embodiments, the at least one protrusion 5 has an undulatingboundary that is a part of the first undulating boundary, a portion ofthe second electrode proximal to the at least one protrusion has anundulating boundary that is a part of the second undulating boundary.Optionally, a portion of the fill pattern is between the at least oneprotrusion and the portion of the second electrode proximal to the atleast one protrusion. Optionally, the portion of the fill pattern has anundulating boundary substantially complementary to the at least oneprotrusion and the portion of the second electrode proximal to the atleast one protrusion. This design further enhances the blanking effectbetween electrodes.

The fill pattern 3 and any sub-pattern thereof can be made of anyappropriate shape having an undulating boundary. Optionally, the fillpattern 3 and any sub-pattern thereof are made of an irregular shapehaving an undulating boundary. The undulating boundary of the fillpattern or any sub-pattern thereof may have any appropriate undulatingboundary, examples of which include a smoothly curved undulatingboundary and a polygonal curved undulating boundary including multiplesectional lines, or a combination thereof.

Sub-pattern 4 may be made of any appropriate shape, examples of whichinclude a parallelogram and a polygon. Optionally, the sub-pattern 4 hasan irregular shape, e.g., an irregular polygon shape. Optionally, eachsub-pattern 4 has a boundary substantially complementary tocorresponding portions of adjacent sub-patterns 4 and correspondingportions of the first undulating boundary and the second undulatingboundary. Sub-patterns 4 along a first direction comprise a first endsub-pattern 41, a second end sub-pattern 42, and a middle sub-pattern 43between the first end sub-pattern 41 and the second end sub-pattern 42.Optionally, as shown in FIG. 2, the middle sub-pattern has a shape of aconcave hexagon.

In a mutual capacitive touch substrate having a matrix of a plurality ofelectrode units described herein, the mutual capacitive touch substrateincludes a plurality of first conduction channel 7 substantially alongthe first direction and a plurality of second conduction channels 6substantially along the second direction for conducting touch signals,e.g., the capacitance change around a touch point. Based on thecapacitance change upon a touch event, the coordinates of the firstelectrode and the second electrode being touched may be determined.

FIG. 3 illustrated the structure a mutual capacitive touch substrate insome embodiments. Referring to FIG. 3, the mutual capacitive touchsubstrate in the embodiment includes a matrix of a plurality ofelectrode units (e.g., a plurality of electrode units as shown in FIG.1). The matrix includes a plurality of rows of electrode units along thefirst direction and a plurality of columns of electrode units along thesecond direction. The plurality of second electrodes in each row ofelectrode units are electrically isolated from each other, and theplurality of first electrodes in each column of electrode units areelectrically isolated from each other. As shown in FIG. 3, the pluralityof first electrodes in each row of electrode units form a firstconduction channel 7 along the first direction including a plurality offirst integral electrode blocks connected in series by a plurality offirst bridges; the first part and the second part from two adjacentelectrode units respectively constitute each first integral electrodeblock. The plurality of second electrodes in each column of electrodeunits form a second conduction channel 6 along the second directionincluding a plurality of second integral electrode blocks connected inseries by a plurality of second bridges; the third part and the fourthpart from two adjacent electrode units respectively constitute eachsecond integral electrode block. Optionally, the first integralelectrode block, the second integral electrode block, and the secondbridge are in a first layer, the first bridge is in a second layerdifferent from the first layer.

Referring to FIG. 3, the plurality of first bridges in each row ofelectrode unit form a midline of the first conduction channel 7, and theplurality of second bridges in each column of electrode unit form amidline of the second conduction channel 6. Optionally, midlines offirst conduction channels are spaced apart by a distance d2 in the rangeof about 3 mm to about 6 mm, and midlines of second conduction channelsare spaced apart by a distance d1 in the range of about 3 mm to about 6mm. A mutual capacitive touch substrate having these channel spacing issuitable for use in combination with a touch-control chip having arelative small channel spacing.

FIG. 4 illustrated the structure a mutual capacitive touch substrate insome embodiments. Referring to FIG. 4, the mutual capacitive touchsubstrate in the embodiment includes a matrix of a plurality ofelectrode units (e.g., a plurality of electrode units as shown in FIG.2). The matrix includes a plurality of rows of electrode units along thefirst direction and a plurality of columns of electrode units along thesecond direction. The plurality of second electrodes in each row ofelectrode units are electrically isolated from each other, and theplurality of first electrodes in each column of electrode units areelectrically isolated from each other. As shown in FIG. 4, the pluralityof first electrodes in each row of electrode units form a firstconduction channel 7 along the first direction including a plurality offirst integral electrode blocks connected in series by a plurality offirst bridges; the first part and the second part from two adjacentelectrode units respectively constitute each first integral electrodeblock. The plurality of second electrodes in each column of electrodeunits form a second conduction channel 6 along the second directionincluding a plurality of second integral electrode blocks connected inseries by a plurality of second bridges; the third part and the fourthpart from two adjacent electrode units respectively constitute eachsecond integral electrode block. Optionally, the first integralelectrode block, the second integral electrode block, and the secondbridge are in a first layer, the first bridge is in a second layerdifferent from the first layer.

Referring to FIG. 4, the plurality of first bridges in each row ofelectrode unit form a midline of the first conduction channel 7, and theplurality of second bridges in each column of electrode unit form amidline of the second conduction channel 6. Optionally, midlines offirst conduction channels are spaced apart by a distance in the range ofabout 6 mm to about 10 mm, and midlines of second conduction channelsare spaced apart by a distance in the range of about 6 mm to about 10mm. A mutual capacitive touch substrate having these channel spacing issuitable for use in combination with a touch-control chip having arelative large channel spacing.

In some embodiments, two or more adjacent first conduction channels 7may be electrically connected in parallel to form a first conductionchannel group 9. In some embodiments, two or more adjacent secondconduction channels 6 may be electrically connected in parallel to forma second conduction channel group 8. Optionally, two or more adjacentfirst conduction channels 7 may be electrically connected in parallel toform a first conduction channel group 9, and two or more adjacent secondconduction channels 6 may be electrically connected in parallel to forma second conduction channel group 8. Referring to FIG. 4, two adjacentfirst conduction channels 7 are electrically connected in parallel toform a first conduction channel group 9, and two adjacent secondconduction channels 6 are electrically connected in parallel to form asecond conduction channel group 8. Optionally, midlines of firstconduction channel groups are spaced apart by a distance in the range ofabout 10 mm to about 15 mm. Optionally, midlines of second conductionchannel groups are spaced apart by a distance in the range of about 10mm to about 15 mm.

Each conduction channel group may be connected to a signal source in atouch-control chip. For example, two adjacent first conduction channels7 may be electrically connected in parallel to form a first conductionchannel group 9, each first conduction channel group 9 is thenelectrically connected with a signal source in a touch control chip.Similarly, two adjacent second conduction channels 6 may be electricallyconnected in parallel to form a second conduction channel group 8, eachsecond conduction channel group 8 is then electrically connected with asignal source in a touch control chip. Referring to FIG. 4, midlines offirst conduction channel groups 9 are spaced apart by a distance d2, andmidlines of second conduction channel groups 8 are spaced apart by adistance d1. The spacing between midlines of first conduction channelgroups 9, d2, is twice of the spacing between midlines of firstconduction channel 7. The spacing between midlines of second conductionchannel groups 8, d1, is twice the spacing between midlines of secondconduction channel 6. Thus, a mutual capacitive touch substrate havingthese channel group spacing is suitable for use in combination with atouch-control chip having a very large channel spacing.

By electrically connecting two or more conduction channels in parallelto form conduction channel groups (e.g., the first conduction channelgroups 9 and the second conduction channel groups 8), a larger channelspacing may be achieved in the mutual capacitive touch substrate. Amutual capacitive touch substrate having this design is compatible witha less expensive touch control chip having fewer signal sources and alarger channel spacing.

In another aspect, the present disclosure provides a mutual capacitivetouch panel having a mutual capacitive touch substrate described herein.

In another aspect, the present disclosure provides a mutual capacitivetouch display apparatus having an array substrate, a package substrate,and a mutual capacitive touch panel described herein. Optionally, themutual capacitive touch panel is an in-cell touch panel. Optionally, themutual capacitive touch panel is an on-cell touch panel. Optionally, themutual capacitive touch panel is an add-on type touch panel. Add-on typetouch panel will have either touch electrodes embedded on a glasssurface or on a thin film. Optionally, the add-on type touch panel is aone-glass-solution type touch panel. In the one-glass-solution typetouch panel, touch electrodes are integrated on a cover glass.Optionally, the mutual capacitive touch panel is a glass-film-film typetouch panel.

The foregoing description of the embodiments of the invention has beenpresented for purposes of illustration and description. It is notintended to be exhaustive or to limit the invention to the precise formor to exemplary embodiments disclosed. Accordingly, the foregoingdescription should be regarded as illustrative rather than restrictive.Obviously, many modifications and variations will be apparent topractitioners skilled in this art. The embodiments are chosen anddescribed in order to best explain the principles of the invention andits best mode practical application, thereby to enable persons skilledin the art to understand the invention for various embodiments and withvarious modifications as are suited to the particular use orimplementation contemplated. It is intended that the scope of theinvention be defined by the claims appended hereto and their equivalentsin which all terms are meant in their broadest reasonable sense unlessotherwise indicated. Therefore, the term “the invention”, “the presentinvention” or the like does not necessarily limit the claim scope to aspecific embodiment, and the reference to exemplary embodiments of theinvention does not imply a limitation on the invention, and no suchlimitation is to be inferred. The invention is limited only by thespirit and scope of the appended claims. Moreover, these claims mayrefer to use “first”, “second”, etc. following with noun or element.Such terms should be understood as a nomenclature and should not beconstrued as giving the limitation on the number of the elementsmodified by such nomenclature unless specific number has been given. Anyadvantages and benefits described may not apply to all embodiments ofthe invention. It should be appreciated that variations may be made inthe embodiments described by persons skilled in the art withoutdeparting from the scope of the present invention as defined by thefollowing claims. Moreover, no element and component in the presentdisclosure is intended to be dedicated to the public regardless ofwhether the element or component is explicitly recited in the followingclaims.

1-21. (canceled)
 22. A mutual capacitive touch substrate, comprising amatrix of a plurality of electrode units, adjacent electrode unitscomplementarily matching each other, a respective one of the pluralityof electrode units comprising: a first electrode having a firstundulating boundary; a second electrode having a second undulatingboundary; and a fill pattern between the first electrode and the secondelectrode, having an undulating boundary substantially complementary tocorresponding portions of the first undulating boundary and the secondundulating boundary; wherein the first electrode, the second electrode,and the fill pattern in a same electrode unit are electrically isolatedfrom each other; the fill pattern comprises a plurality of sub-patterns;at least one of the plurality of sub-patterns has an irregular shape;sub-patterns along a first direction comprise a first end sub-pattern, asecond end sub-pattern, and a middle sub-pattern between the first endsub-pattern and the second end sub-pattern; and the middle sub-patternhas a shape of a concave hexagon.
 23. The mutual capacitive touchsubstrate of claim 22, wherein each of the first end sub-pattern and thesecond end sub-pattern has a shape of pentagon; one of the first endsub-pattern and the second end sub-pattern has a shape of a concavepentagon; and another of the first end sub-pattern and the second endsub-pattern has a shape of a convex pentagon.
 24. The mutual capacitivetouch substrate of claim 22, wherein the first electrode comprises atleast one protrusion extending substantially along a second direction,the second direction intersecting the first direction; and at least 80%of sub-patterns along the second direction has a shape of quadrilateral.25. The mutual capacitive touch substrate of claim 24, wherein the atleast one protrusion has an undulating boundary that is a part of thefirst undulating boundary, a portion of the second electrode proximal tothe at least one protrusion has an undulating boundary that is a part ofthe second undulating boundary, a portion of the fill pattern is betweenthe at least one protrusion and the portion of the second electrodeproximal to the at least one protrusion, the portion of the fill patternhas an undulating boundary substantially complementary to the at leastone protrusion and the portion of the second electrode proximal to theat least one protrusion.
 26. The mutual capacitive touch substrate ofclaim 24, wherein the at least one protrusion comprises a plurality ofprotrusions that are symmetrical relative to an axis of the firstelectrode along the first direction.
 27. The mutual capacitive touchsubstrate of claim 22, wherein the first electrode comprises a firstpart, a second part, and a first bridge electrically connecting thefirst part and the second part; the first part, the second part, and thefirst bridge arranged substantially along a first direction; the secondelectrode comprises a third part, a fourth part, and a second bridgeelectrically connecting the third part and the fourth part and dividingthe first electrode into the first part and the second part; the thirdpart, the fourth part, and the second bridge arranged substantiallyalong a second direction, the second direction intersecting the firstdirection; and the first part, the second part, the third part, thefourth part, and the second bridge are in a first layer, the firstbridge is in a second layer different from the first layer.
 28. Themutual capacitive touch substrate of claim 27, wherein the matrix of theplurality of electrode units comprises a plurality of rows of electrodeunits along the first direction and a plurality of columns of electrodeunits along the second direction; a plurality of second electrodes ineach row of electrode units are electrically isolated from each other, aplurality of first electrodes in each column of electrode units areelectrically isolated from each other; the plurality of first electrodesin each row of electrode units form a first conduction channel along thefirst direction comprising a plurality of first integral electrodeblocks connected by a plurality of first bridges; the first part and thesecond part from two adjacent electrode units respectively constituteeach first integral electrode block; and the plurality of secondelectrodes in each column of electrode units form a second conductionchannel along the second direction comprising a plurality of secondintegral electrode blocks connected by a plurality of second bridges;the third part and the fourth part from two adjacent electrode unitsrespectively constitute each second integral electrode block.
 29. Themutual capacitive touch substrate of claim 28, wherein midlines of firstconduction channels are spaced apart by a distance in a range of about 3mm to about 6 mm, and midlines of second conduction channels are spacedapart by a distance in a range of about 3 mm to about 6 mm.
 30. Themutual capacitive touch substrate of claim 28, wherein the firstelectrode comprises a plurality of protrusions extending substantiallyalong the second direction, the plurality of protrusions are symmetricalrelative to an axis of the first electrode along the first direction;and midlines of first conduction channels are spaced apart by a distancein a range of about 6 mm to about 10 mm, and midlines of secondconduction channels are spaced apart by a distance in a range of about 6mm to about 10 mm.
 31. The mutual capacitive touch substrate of claim28, comprising a plurality of first conduction channel groups and aplurality of second conduction channel groups; each first conductionchannel group comprises two adjacent first conduction channelselectrically connected in parallel, each second conduction channel groupcomprises two adjacent second conduction channels electrically connectedin parallel; and midlines of first conduction channel groups are spacedapart by a distance in a range of about 10 mm to about 15 mm, andmidlines of second conduction channel groups are spaced apart by adistance in a range of about 10 mm to about 15 mm.
 32. A mutualcapacitive touch display apparatus, comprising the mutual capacitivetouch substrate of claim
 22. 33. A mutual capacitive touch substrate,comprising a matrix of a plurality of electrode units, adjacentelectrode units complementarily matching each other, a respective one ofthe plurality of electrode units comprising: a first electrode having afirst undulating boundary; a second electrode having a second undulatingboundary; and a fill pattern between the first electrode and the secondelectrode, having an undulating boundary substantially complementary tocorresponding portions of the first undulating boundary and the secondundulating boundary; wherein the first electrode, the second electrode,and the fill pattern in a same electrode unit are electrically isolatedfrom each other; the fill pattern comprises a plurality of sub-patterns;at least one of the plurality of sub-patterns has an irregular shape;the first undulating boundary is substantially parallel to the secondundulating boundary; the first electrode comprises a plurality of endparts; each one of the plurality of end parts of the first electrode isdivided from the second electrode by only a single etching line; thesingle etching line has a shape of a wavy line; and the each one of theplurality of end parts is a farthest end from a geometry center of thefirst electrode along a first direction or along a second direction, thesecond direction intersecting the first direction.
 34. The mutualcapacitive touch substrate of claim 33, wherein the first electrodecomprises a first part, a second part, and a first bridge electricallyconnecting the first part and the second part; the first part, thesecond part, and the first bridge arranged substantially along the firstdirection; the second electrode comprises a third part, a fourth part,and a second bridge electrically connecting the third part and thefourth part and dividing the first electrode into the first part and thesecond part; the third part, the fourth part, and the second bridgearranged substantially along the second direction; and the first part,the second part, the third part, the fourth part, and the second bridgeare in a first layer, the first bridge is in a second layer differentfrom the first layer.
 35. The mutual capacitive touch substrate of claim34, wherein the matrix of the plurality of electrode units comprises aplurality of rows of electrode units along the first direction and aplurality of columns of electrode units along the second direction; aplurality of second electrodes in each row of electrode units areelectrically isolated from each other, a plurality of first electrodesin each column of electrode units are electrically isolated from eachother; the plurality of first electrodes in each row of electrode unitsform a first conduction channel along the first direction comprising aplurality of first integral electrode blocks connected by a plurality offirst bridges; the first part and the second part from two adjacentelectrode units respectively constitute each first integral electrodeblock; and the plurality of second electrodes in each column ofelectrode units form a second conduction channel along the seconddirection comprising a plurality of second integral electrode blocksconnected by a plurality of second bridges; the third part and thefourth part from two adjacent electrode units respectively constituteeach second integral electrode block.
 36. The mutual capacitive touchsubstrate of claim 35, wherein midlines of first conduction channels arespaced apart by a distance in a range of about 3 mm to about 6 mm, andmidlines of second conduction channels are spaced apart by a distance arange of about 3 mm to about 6 mm.
 37. The mutual capacitive touchsubstrate of claim 35, wherein the first electrode comprises a pluralityof protrusions extending substantially along the second direction, theplurality of protrusions are symmetrical relative to an axis of thefirst electrode along the first direction; and midlines of firstconduction channels are spaced apart by a distance in a range of about 6mm to about 10 mm, and midlines of second conduction channels are spacedapart by a distance in a range of about 6 mm to about 10 mm.
 38. Themutual capacitive touch substrate of claim 35, comprising a plurality offirst conduction channel groups and a plurality of second conductionchannel groups; each first conduction channel group comprises twoadjacent first conduction channels electrically connected in parallel,each second conduction channel group comprises two adjacent secondconduction channels electrically connected in parallel; and midlines offirst conduction channel groups are spaced apart by a distance in arange of about 10 mm to about 15 mm, and midlines of second conductionchannel groups are spaced apart by a distance in a range of about 10 mmto about 15 mm.
 39. The mutual capacitive touch substrate of claim 33,wherein the first electrode comprises at least one protrusion extendingsubstantially along a second direction; and the at least one protrusionhas an undulating boundary that is a part of the first undulatingboundary, a portion of the second electrode proximal to the at least oneprotrusion has an undulating boundary that is a part of the secondundulating boundary, a portion of the fill pattern is between the atleast one protrusion and the portion of the second electrode proximal tothe at least one protrusion, the portion of the fill pattern has anundulating boundary substantially complementary to the at least oneprotrusion and the portion of the second electrode proximal to the atleast one protrusion.
 40. The mutual capacitive touch substrate of claim33, wherein the first electrode comprises at least one protrusionextending substantially along the second direction; and the at least oneprotrusion comprises a plurality of protrusions that are symmetricalrelative to an axis of the first electrode along the first direction.41. A mutual capacitive touch display apparatus, comprising the mutualcapacitive touch substrate of claim 33.